Flag Ponds, Zone 19: Serravallian, Maryland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Arcidae
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Dallarca elevata
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Ward 1992 | |||||||||
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Arca staminea
Say 1832
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| recombined as Dallarca staminea | ||||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Pecten madisonius
Say 1824
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| recombined as Chesapecten madisonius | ||||||||||
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Chesapecten nefrens
Ward and Blackwlder 1975
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Ward 1992 | |||||||||
| recombined as Chesapecten (Chesapecten) nefrens | ||||||||||
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Chesapecten monicae
Ward 1992
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Ward 1992 | |||||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea carolinensis
Conrad 1832
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Bivalvia
- Ostreida
- Malleidae
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Isognomon (Hippochaeta) sp.
()
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Ward 1992 | |||||||||
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Bivalvia
- Carditida
- Crassatellidae
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Crassatellites marylandica
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| synonym of Crassatella | ||||||||||
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Marvacrassatella marylandica
(Conrad 1832)
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Ward 1992 | |||||||||
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Bivalvia
- Carditida
- Astartidae
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Astarte thisphila
Glenn 1904
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Astarte obruta
Conrad 1834
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Ward 1992 | |||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Lucinoma contracta
(Say 1824)
|
Ward 1992 | |||||||||
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Phacoides anodonata
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Stewartia anodonta
(Say 1824)
|
Ward 1992 | |||||||||
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea americana
(Conrad 1838)
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Ward 1992 | |||||||||
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Bivalvia
- Pholadida
- Corbulidae
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Corbula idonea
Conrad 1833
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| recombined as Bicorbula idonea | ||||||||||
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Bicorbula idonea
(Conrad 1833)
|
Ward 1992 | |||||||||
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Bivalvia
- Cardiida
- Tellinidae
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Florimetis biplicata
(Conrad 1834)
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Ward 1992 | |||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Cardium laqueatum
Conrad 1830
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| recombined as Chesacardium laqueatum | ||||||||||
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Chesacardium laqueatum
(Conrad 1830)
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Ward 1992 | |||||||||
| subspecies vostreysi | ||||||||||
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Bivalvia
- Cardiida
- Veneridae
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Macrocallista marylandica
(Conrad 1833)
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Clementia inoceriformis
(Wagner 1839)
|
Ward 1992 | |||||||||
| recombined as Clementia (Clementia) inoceriformis | ||||||||||
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Pleiorytis calvertensis
(Dall 1900)
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Ward 1992 | |||||||||
| original and current combination Petricola (Petricolaria) calvertensis | ||||||||||
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Mercenaria cuneata
Conrad 1869
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Ward 1992 | |||||||||
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Dosinia acetabulum
(Conrad 1832)
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| subspecies blackwelderi | ||||||||||
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Bivalvia
- Cardiida
- Glossidae
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Glossus marylandica
(Schoonover 1941)
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Ward 1992 | |||||||||
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Gastropoda
- Neogastropoda
- Muricidae
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Ecphora meganae
Ward and Gilinsky 1988
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Ward 1992 | |||||||||
| subspecies williamsi | ||||||||||
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Gastropoda
- Turritellidae
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Turritella terebriformis
Conrad 1863
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Ward 1992 | |||||||||
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Turritella plebeia
Say 1824
|
Ward 1992 | |||||||||
| recombined as Mariacolpus plebeia | ||||||||||
| subspecies plebeia | ||||||||||
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Thecostraca
- Balanomorpha
- Balanidae
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Balanus concavus
Bronn 1831
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| recombined as Concavus concavus | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Maryland | County: | Calvert |
| Coordinates: | 38.5° North, 76.5° West (view map) | ||||
| Paleocoordinates: | 38.6° North, 73.6° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Serravallian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Serravallian | ||
| Age range of interval: | 13.82000 - 11.63000 m.y. ago |
Stratigraphy
| Geological group: | Chesapeake | Formation: | Choptank | Member: | Boston Cliffs |
| Regional section: | Shattuck | Regional bed: | 19 | ||
| Regional order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Formerly Calvert Formation | |||||
Lithology and environment
| Primary lithology: | sandy claystone |
| Includes fossils? | Y |
| Lithology description: sandy clay | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 70846 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen |
| Modifier: | G. Varnham | Research group: | marine invertebrate,vertebrate |
| Created: | 2007-04-09 14:49:30 | Last modified: | 2022-03-03 05:04:53 |
| Access level: | the public | Released: | 2007-04-09 14:49:30 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 23697. | G. B. Shattuck. 1904. Geological and paleontological relations, with a review of earlier investigations. Maryland Geological Survey Miocene Text xxxiii-clv [M. Uhen/M. Uhen] |
Secondary references:
| 16985 | L. W. Ward. 1992. Molluscan biostratigraphy of the Miocene Middle Atlantic Coastal Plain of North America. Virginia Museum of Natural History 2 [A. Miller/A. Hendy] |